ANALYSIS AND DESIGN OF THE LOG-PERIODIC DIPOLE ANTENNA

摘要: Abstract : A mathematical analysis of the logarithmically periodic dipole class frequency independent antennas, which takes into account mutual coupling between elements, is described. The input impedance, directivity, and bandwidth, as well current voltage several are calculated. new concept, bandwidth active region, formulated used to relate size operating antenna. limiting values various parameters that describe antenna explored. results from model shown be in good agreement with measurements. step by procedure presented enables one design a log-periodic over wide range size.